Question

State the method by which impurities present in natural water can be removed.

Answer 1

• For the removal of dispersed and colloidal impurities from water the process is called clarification.
• The impurities can be removed either by filtration, distillation, or sedimentation.
• Filtration is a physical process in which a liquid containing suspended solid particles is passed through a fine screen to separate the solids from the liquid.
• Distillation is a method of separating liquids by converting the mixture's physical state from liquid to gas.
• Sedimentation is nothing but a process of separating small particles and sediments in the water.